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New biodegradable composites for food packaging

from SPE Plastics Research Online

Polyhydroxyalkanoates (PHAs) are biopolyesters produced by micro-organisms cultivated in carbon substrates. PHAs degrade in soil, sludge, or seawater at room temperature. As such, they are good candidates for food packaging applications where the container is to be degraded in the same stream as the food product. However, PHAs are expensive and possess reduced melt processability. Thus, most PHA-based biocomposites are formulated with cheap fillers and other additives and then processed by compression or injection molding. more


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